Improvement in derricks



c. L. n unov.

Derrick. No, 159,024, Patenfed Jan. 26, I875.,

Wifn waves: In V612 I01.

UNITED STATES PATENT OEEIoE.

CHARLES L. DUROY, oE PIONEER, OHIO.

IMPROVEMENT m DIERRICKS.

Specification forming part of Letters Patent No. 159,024, dated January 26, 1875; application filed December 5, 1874.

Ohio, have invented a certain new and Im-- proved Derrick, of which the following is a full, clear, and complete description:

In boring artesian wells it becomes necessary, from time to time, to withdraw the drill therefrom, which, when the well is of considerable depth, requires much time and labor, in consequence of the great length of the drillrods and the many joints whereby the sections composing the rod are connected to each other. To facilitate and lessen the labor of withdrawing the rod from the well are the purposes of this invention, a description whereof is as follows-reference being had to the accompanying drawings, making part of this specifica' tion, wherein Figures 1 and 2 are side elevations of the derrick, having a section of the drill-rod attached.

Like letters of reference refer to like parts in the several views.

The derrick above referred to consists. of the frame A, supported in proper position and braced by the legs B. Said braces can be shortened or lengthened out for adjusting the frame to any desirable position, by means of the attachment to their lower ends of a slide or extension piece, C, secured to the brace by the bands D D. The band D is fixed to the slide, whereas the band. D is fixed to the brace. By means of the bands the slide is confined to the brace, which, however, can be moved upward or downward along the brace, as the position of the frame may require. The loop E, attached to the brace, prevents the slide from pushing upward by its being lodged in one of the notches, a, cut in the edge of the slide. In the frame A is arranged a Windlass, F, operated by the cranks G and brake H. On said Windlass are two ropes, I

' J, one on each side of the roller, which, as the roller is turned, winds up one rope, and at the same time nnwinds the other. To the end of each of the ropes is attached a section of a drill-rod, to which the other section of the rod is successively attached as they are lifted from the well.

The above-described derrick is stood over the well in the position shown in Figs. 1 and 2. In said figures, A represents the ground into which the drill-rods descend. Now, when it becomes necessary to withdraw the drill from the well, either ofthe ropes may at first be usedwhich, for illustration, is supposed to be I. To said rope is attached the end of the first section of the drillrod. The rope, on being wound up, draws upward the rod, the first section of which, on coming out of the well, is detached, and the rope J, which, by this time has come down, is then made fast to the second section of the rod. The Windlass is now turned in the opposite direction, thereby winding up the rope J, at the same time unwinding the rope I, which, by the time the section of the rod is lifted from the well, the rope I is at hand to be attached to the third section, (on the detachment of the second lifted by the rope J and so on, until the entire rod is withdrawn from the well.

By the alternating ascending and descending ropes the drill-rod and drill are quickly withdrawn from the well, and in much less time and with less labor than they could be by the use only of one rope.

What I claim as my invention, and desire to secure by Letters Patent, is-

The herein-described derrick, consisting of of the frame A, Windlass I ropes I J, arranged in relation to each other and to the drum of the Windlass, as described, braces B, provided with extension pieces or slides G, attached thereto by notches a and loop E, in the manner as and for the purpose specified.

CHARLES L. DUROY.

Witnesses:

J. H. BURRIDGE, A. M. ADAMS. 

